Södertelje Verkstäder was a Swedish company in Södertälje

Södertälje

Södertälje is a city and the seat of Södertälje Municipality, Stockholm County, Sweden with 86,069 inhabitants in 2010.The industrial city, about south of Stockholm, is the home to truck maker Scania AB and a top 10 pharmaceutical company AstraZeneca....

 that made railway cars and Draisine

Draisine

A draisine primarily refers to a light auxiliary rail vehicle, driven by service personnel, equipped to transport crew and material necessary for the maintenance of railway infrastructure....

. In 1901 the builder of electric cars Harald Håkansson managed to agree a contract so that Södertelje Verkstäder got access to experience, blueprints and engines from Kühlstein

Kühlstein

The Kühlstein Wagenbau in Berlin-Charlottenburg was a coachbuilding company that produced electric cars from 1898 to 1902. Some were vehicles of in-house design, others were Jeantaud cabs built under licence. The firm also built tractor units to replace horses for use with horse-drawn carriages....

, NAG

Nag

Nag may refer to:* Nag Missile, a third generation "fire and forget" anti-tank missile* Nag, a horse that is of low quality.* Nag, a male cobra in Rudyard Kipling's Rikki-Tikki-Tavi* Nag, a multi user tasklist manager included in Horde...

 and Protos

Protos

Protos may refer to:* Protos , a monastic office at the eastern orthodox monastic state of Mount Athos* Protos , a former racing car constructor* PROTOS , a German train...

 that they sold under the name "Helios". Starting in 1902 the company also imported the Oldsmobile Curved Dash

Oldsmobile Curved Dash

The gasoline powered Curved Dash Oldsmobile is credited as being the first mass-produced automobile, meaning that it was built on an assembly line using interchangeable parts. It was introduced by the Oldsmobile company in 1901 and produced through 1907...

 lookalike Northern

Northern (automobile)

Northern Manufacturing Company was a manufacturer of Brass Era automobiles in Detroit, Michigan, automobiles designed by Charles Brady King.-History:...

(made by ex-Oldsmobile employees J D Maxwell and C B King) from Detroit, USA and sold it as "Norden". However, the market wasn't ready for automobiles and in 1906 they sold the remaining stock but continued making railway cars and aeroplanes.